My Math Forum [Solved] Simplification question

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 May 8th, 2011, 09:33 PM #11 Senior Member   Joined: Feb 2009 From: Adelaide, Australia Posts: 1,519 Thanks: 3 Re: Simplification question The rule $\sqrt{xy}=\sqrt{x}\sqrt{y}$ is no longer reliable if imaginary numbers are introduced. For example, try x = y = -1.
May 8th, 2011, 09:44 PM   #12
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Re: [Solved] Simplification question

Quote:
 Originally Posted by MarkFL Several centuries ago you would probably have to have been the child of a king to get tutored by someone of his talents. :P
I'm not so sure, MarkFL, I remember seeing a special last year on Nova called "The Universal Decision" in which Ed Witten made the announcement that, among other things (having to do with some weird space stuff?), he "was taking his talents to Florida"...

Quote:
 Originally Posted by MarkFL The only things I have in common with Dr. Witten are glasses and a receding hairline.
Hmmm.....

-Ormkärr-

May 8th, 2011, 10:01 PM   #13
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Re: Simplification question

Quote:
 Originally Posted by aswoods The rule $\sqrt{xy}=\sqrt{x}\sqrt{y}$ is no longer reliable if imaginary numbers are introduced. For example, try x = y = -1.
Au contraire mon frere!
This identity is the foundation of my recent solution of the general quintic. Needless to say, there are many imaginary components.

Can't wait to hear your rebuttal, Mr. O! But alas, it's bedtime for The Chaz...

 May 8th, 2011, 10:14 PM #14 Senior Member   Joined: Jun 2010 Posts: 618 Thanks: 0 Re: [Solved] Simplification question The Chaz, I know of your solution, it is quite famous on the web, but I imagine it must be hard to live in a country which bans your work... seeing as your solution is a 'solution by radicals'... and we all know what happens to 'radicals' in the United States... they are 'eliminated'. Teacher: "How do you solve this equation containing radicals?" Class (in unison): "Isolate the radical! Eliminate the radical!" Teacher: "Waldo, I didn't hear you..." -Ormkärr- P.s. Where's Waldo now?

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